Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 48
Filtrar
Mais filtros

Bases de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Altern Ther Health Med ; 30(1): 254-259, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37773686

RESUMO

Objective: Bronchoscopy and endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) are two essential methods for obtaining the pathological diagnosis of central lung masses or hilar and mediastinal lymphadenopathy. We can observe that many patients have a fever after examinations, but the pathogenesis is not yet fully clear. We tried to comprehensively assess the occurrence of postoperative fever and bacterial infections in patients undergoing bronchoscopy and endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) procedures. Methods: We retrospectively analyzed 512 patients undergoing bronchoscopy or EBUS-TBNA examination. According to examination methods, all patients were classified into three groups: Only perform bronchoscopy examination (BO) group (122 cases),both perform bronchoscopy and biopsy (BB) group (262 cases), and EBUS-TBNA after bronchoscopy (EBUS) group (128 cases). Peripheral blood leucocyte, neutrophil count, and serum IL-6 test results were obtained before and after the examination. A blood culture was performed when the body temperature was higher than 38.5°C. Results: Among the three groups, the onset time (5.5h), average duration (6h), and peak temperature (37.7°C) of fever in the BO group were lower than those in the BB and EBUS groups. Still, there was no significant difference in onset time (11.66h, 11.83h), average duration (12.86h, 13.56h), and peak temperature (39.1°C, 39.1°C) between the BB group and EBUS group. There was no significant difference in the peripheral blood leukocyte count, neutrophil count or IL-6 level before the operation (P > .05). Compared with the preoperative, the leukocyte count, neutrophil count and IL-6 level in the three groups were increased after the operation (P < .05). Positive blood cultures were diagnosed as normal oropharyngeal flora. Conclusions: Postoperative fever after bronchoscopy is a relatively common complication, most of which do not require special treatment. Individuals with concomitant diseases such as diabetes may have postoperative infections after EBUS-TBNA, and they should be emphatically observed. The findings could potentially extend to similar diagnostic procedures or situations in pulmonary medicine. Understanding the risk factors associated with postoperative fever can help healthcare providers manage patient expectations and monitor certain groups more closely.


Assuntos
Broncoscopia , Interleucina-6 , Humanos , Broncoscopia/efeitos adversos , Broncoscopia/métodos , Estudos Retrospectivos , Linfonodos/patologia , Aspiração por Agulha Fina Guiada por Ultrassom Endoscópico/efeitos adversos , Aspiração por Agulha Fina Guiada por Ultrassom Endoscópico/métodos
2.
Int J Cancer ; 149(1): 108-118, 2021 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-33544890

RESUMO

This cross-sectional and longitudinal descriptive analysis aimed to track the evolving landscape of global immuno-oncology (IO) trials and provide insight into the resolution of IO-related controversies. Clinical trials (n = 4510) registered on ClinicalTrials.gov in 2007 to 2019 studying immune checkpoint inhibitors (ICIs), adoptive cell transfer (ACT), cancer vaccines and immune modulators were included. Most of IO trials are Phase 2 and focus on ICIs and multiple IO therapies. The United States leads global IO research, with stable growth and the best methodological quality. Mainland China ranks first in the number of ACT trials but has the lowest article publication rate (6.2%). A multiple-arm comparative design is often adopted in multiple IO therapies trials (44.0%). Trials studying ICIs and multiple IO therapies are likely to use early registration (80.0% and 86.6%) and stringent corticosteroid-/infection-related criteria. Hospitals have provided the most extensive and strongest support for all IO categories. Big pharma prefers to fund Phase 3-4 ICI trials (6.98%), while small pharma has a wider sponsorship favoring Phase 1-2 trials. The "partial-use-of-corticosteroids" strategy is generally well accepted in ICI trials with a definitive trend (32.5%; P < .001) but is associated with the poor dissemination of results (P ≤ .020), while the complete disclosure and standardization of dose/timing limits are still lacking. Disparities in design features and dissemination of results are widespread in IO trials and are modulated by IO category, cancer type and sponsor. We propose policy reforms to redefine the timely publication of IO trials and standardize the resolution of corticosteroid-/infection-related issues.


Assuntos
Atitude do Pessoal de Saúde , Ensaios Clínicos como Assunto/normas , Inibidores de Checkpoint Imunológico/uso terapêutico , Imunoterapia/tendências , Neoplasias/tratamento farmacológico , Neoplasias/imunologia , Padrões de Prática Médica/normas , Academias e Institutos , Estudos Transversais , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Estudos Longitudinais , Prognóstico
3.
Ren Fail ; 42(1): 792-798, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32772773

RESUMO

OBJECTIVE: We aimed to evaluate the effect of prolonged recovery from DGF on outcomes, using a new definition of DGF recovery time, among deceased donor kidney transplant recipients with DGF, and to examine the risk factors for prolonged recovery. METHODS: From 2007 to 2016, 91 deceased donor kidney transplant recipients with DGF were retrospectively analyzed. DGF recovery time was defined as the time from transplantation to achieve a stable estimated glomerular filtration rate (eGFR). Recipients with a DGF recovery time greater than or equal to the median were assigned to the prolonged recovery group, while the others were assigned to the rapid recovery group. RESULT: The median DGF recovery time was 27 days. Donor terminal eGFR was significantly lower in the prolonged recovery group (n = 46) compared with the rapid recovery group (n = 45) (median 24.9 vs. 65.4 ml/min/1.73m2, p = 0.004). The eGFR at 1 year post-transplant in the prolonged recovery group was significantly lower than that in the rapid recovery group (50.6 ± 20.0 vs. 63.5 ± 21.4 ml/min/1.73m2, p = 0.005). The risk of adverse outcomes (acute rejection, pneumonia, graft failure, and death) was significantly greater in the prolonged recovery group (hazard ratio 2.604, 95% confidence interval 1.102-6.150, p = 0.029) compared with the rapid recovery group. CONCLUSION: Decreased donor terminal eGFR is a risk factor for prolonged recovery from DGF after deceased kidney transplantation. Prolonged DGF recovery time is associated with reduced graft function at 1-year post-transplant, and poor transplant outcome.


Assuntos
Função Retardada do Enxerto/etiologia , Transplante de Rim/efeitos adversos , Transplante de Rim/métodos , Doadores de Tecidos , Adulto , Feminino , Taxa de Filtração Glomerular , Rejeição de Enxerto , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo
4.
Bioorg Med Chem Lett ; 29(11): 1380-1385, 2019 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-30952592

RESUMO

The parallel medicinal chemistry (PMC) was effectively applied to accelerate the optimization of diacylglycerol O-acyltransferase I (DGAT-1) inhibitors. Through a highly collaborative and iterative library design, synthesis and testing, a benzimidazole lead was rapidly and systematically advanced to a highly potent, selective and bioavailable DGAT1 inhibitor with the potential for further development.


Assuntos
Benzimidazóis/farmacologia , Diacilglicerol O-Aciltransferase/antagonistas & inibidores , Descoberta de Drogas , Inibidores Enzimáticos/farmacologia , Benzimidazóis/síntese química , Benzimidazóis/química , Química Farmacêutica , Diacilglicerol O-Aciltransferase/metabolismo , Relação Dose-Resposta a Droga , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/química , Humanos , Estrutura Molecular , Relação Estrutura-Atividade
5.
Bioorg Med Chem Lett ; 29(10): 1182-1186, 2019 05 15.
Artigo em Inglês | MEDLINE | ID: mdl-30926247

RESUMO

Previously disclosed benzimidazole-based DGAT1 inhibitors containing a cyclohexane carboxylic acid moiety suffer from isomerization at the alpha position of the carboxylic acid group, generating active metabolites which exhibit DGAT1 inhibition comparable to the corresponding parent compounds. In this report, we describe the design, synthesis and profiling of benzimidazole-based DGAT1 inhibitors with a [3.1.0] bicyclohexane carboxylic acid moiety. Our results show that single isomer 3A maintains in vitro and in vivo inhibition against DGAT1. In contrast to previous lead compounds, 3A does not undergo isomerization during in vitro hepatocyte incubation study or in vivo mouse study.


Assuntos
Benzimidazóis/química , Ácidos Carboxílicos/química , Diacilglicerol O-Aciltransferase/antagonistas & inibidores , Inibidores Enzimáticos/química , Animais , Benzimidazóis/metabolismo , Ácidos Carboxílicos/metabolismo , Cromatografia Líquida de Alta Pressão , Cicloexanonas/química , Diacilglicerol O-Aciltransferase/metabolismo , Inibidores Enzimáticos/análise , Inibidores Enzimáticos/metabolismo , Hepatócitos/química , Hepatócitos/metabolismo , Humanos , Concentração Inibidora 50 , Isomerismo , Espectrometria de Massas , Camundongos , Ratos
6.
Am J Physiol Endocrinol Metab ; 315(3): E416-E424, 2018 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-29509438

RESUMO

Numerous studies have implicated dyslipidemia as a key factor in mediating insulin resistance. Ceramides have received special attention since their levels are inversely associated with normal insulin signaling and positively associated with factors that are involved in cardiometabolic disease. Despite the growing literature surrounding ceramide biology, there are limited data regarding the activity of ceramide synthesis and turnover in vivo. Herein, we demonstrate the ability to measure ceramide kinetics by coupling the administration of [2H]water with LC-MS/MS analyses. As a "proof-of-concept" we determined the effect of a diet-induced alteration on ceramide flux; studies also examined the effect of myriocin (a known inhibitor of serine palmitoyltransferase, the first step in sphingosine biosynthesis). Our data suggest that one can estimate ceramide synthesis and draw conclusions regarding the source of fatty acids; we discuss caveats in regards to method development in this area.


Assuntos
Ceramidas/farmacocinética , Animais , Cromatografia Líquida de Alta Pressão , Óxido de Deutério/farmacocinética , Dieta , Inibidores Enzimáticos , Ácidos Graxos Monoinsaturados/farmacologia , Masculino , Espectrometria de Massas , Camundongos , Camundongos Endogâmicos C57BL , Traçadores Radioativos , Serina C-Palmitoiltransferase/antagonistas & inibidores , Espectrometria de Massas em Tandem
7.
Zhong Yao Cai ; 39(7): 1550-3, 2016 Jul.
Artigo em Zh | MEDLINE | ID: mdl-30204358

RESUMO

Objective: To investigate the constituents of the roots in Osmanthus fragrans. Methods: The Osmanthus fragrans roots alcohol extract solution were separated and purified by silica gel,Sephadex LH-20 and other materials, the structures were identified by physicochemical properties and spectral analysis. Results: Thirteen flavonoids were isolated from the roots of Osmanthus fragrans,which identified as glabrol ( 1), dihydroquercetin( 2),2'-hydroxy-5,7,8-trimethoxyflavone( 3),lupinifolin( 4), phloretin( 5), apigenin ( 6), calycosine( 7), quercetin( 8),3',4',5,7-tetrahydroxy flavanone( 9),5-hydroxy-7,8,2',6'-tetramethoxyflavone( 10),isoliquiritigenin( 11),tonkinensisol( 12),kaempferol ( 13). Conclusion: Compounds 1 ~ 5,7,9 ~ 12 are isolated from the Osmanthus fragrans for the first time.


Assuntos
Oleaceae , Medicamentos de Ervas Chinesas , Flavonoides , Raízes de Plantas , Quercetina/análogos & derivados
8.
Zhong Yao Cai ; 38(10): 2091-4, 2015 Oct.
Artigo em Zh | MEDLINE | ID: mdl-27254921

RESUMO

OBJECTIVE: To study the chemical constituents of Citrus medica fruit. METHODS: The fruit of Citrus medica was extracted with 95% EtOH, and the compounds were separated and purified by silica gel, RP-18 and Sephadex LH-20 column chromatography. The structures were identified by spectroscopic analysis. RESULTS: A total of 16 compounds were isolated and identified, including methyl ferulic acid (1), dihydro-N-caffeoyltyramine (2) acacetin (3), ß-ecdysterone (4), (-)-balanophonin (5), p-methoxy cinnamic acid (6), umbelliferone (7), ferulic acid (8), pyrocatechualdehyde (9), diosmetin (10), 4-methoxy salicylic acid (1), ß-amyrin acetate (12), epigallocatechin (13), betulinic acid (14), lupeol (15) and nicotinamide (16). CONCLUSION: All the compounds are isolated from the fruit of Citrus medica for the first time.


Assuntos
Citrus/química , Frutas/química , Compostos Fitoquímicos/análise , Ácidos Cafeicos/isolamento & purificação , Cinamatos/isolamento & purificação , Ácidos Cumáricos/isolamento & purificação , Flavonas/isolamento & purificação , Flavonoides/isolamento & purificação , Ácido Oleanólico/análogos & derivados , Ácido Oleanólico/isolamento & purificação , Triterpenos Pentacíclicos/isolamento & purificação , Compostos Fitoquímicos/isolamento & purificação , Plantas Medicinais/química , Tiramina/análogos & derivados , Tiramina/isolamento & purificação
9.
Zhong Yao Cai ; 38(9): 1875-8, 2015 Sep.
Artigo em Zh | MEDLINE | ID: mdl-26930982

RESUMO

OBJECTIVE: To study the chemical constituents of aerial parts of Paris polyphylla var. chinensis . METHODS: Aerial parts of Paris polyphylla var. chinensis was extracted with 95% EtOH, and separated and purified by silica gel, RP 18 and Sephadex LH-20 col- umn chromatography. The structures were identified by spectroscopic analysis. RESULTS: A total of ten compounds were isolated and iden- tified as ß-sitosterol (1) ergosta-7, 22-dien-3-one (2), ß-ecdysone (3), kaempferol (4), daucosterol (5) luteolin (6) calonysterone (7), luteolin-7-O-glucoside (8), quercetin (9), and 3ß, 5α, 9α-trihydroxyergosta-7, 22-dien-6-one (10). CONCLUSION: Compounds 2,6 and 10 are isolated from Paris polyphylla var. chinensis for the first time.


Assuntos
Liliaceae/química , Componentes Aéreos da Planta/química , Extratos Vegetais/química , Plantas Medicinais/química , Ecdisterona , Flavonas , Glucosídeos , Quempferóis , Compostos Fitoquímicos/química , Quercetina , Sitosteroides
10.
Zhongguo Zhong Yao Za Zhi ; 40(4): 679-85, 2015 Feb.
Artigo em Zh | MEDLINE | ID: mdl-26137690

RESUMO

By Silica gel, Sephadex LH-20 and other materials for isolation and purification and by physicochemical methods and spectral analysis for structural identification, 32 compounds were isolated and identified from ethyl acetate portion of alcohol extract of the Osmanthus fragrans. Their structures were identified as boschniakinic acid (1), ursolaldehyde (2), augustic acid (3), arjunolic acid (4), 5-hydroxymethyl-2-furancarboxaldehyde (5), isoscutellarein (6), 6, 7-dihydroxycoumarin (7), 2α-hydroxy-oleanolic acid (8), quercetin-3-0-ß-D-glu-copyranoside (9), D-allito (10), 5, 4'-dihydroxy-7- methoxyflavone-3-0-ß-D-glucopyranoside (11), 5,7-dihydroxychromone (12), lupeol (13), naringenin (14), acetyloleanolic acid (15), chlorogenic acid (16), kaempferol-3-0-ß- D-glucopyranoside (17), oleanolic acid (18), kaempferol-3-0-ß-D-galactopyanoside (19), 3', 7-dihydroxy-4'-methoxyisoflavon (20), ergosta-4,6,8 (14), 22-tetraen-3-one (21), p-hydroxycinnamic acid (22), syringaresinol (23), 3,4-dihydroxyacetophenonel (24), ß-sitosterol (25), ethyl p-hydroxyphenylacetate (26), benzoic acid (27), caffeic acid (28), coelonin (29), p-hydorxy-phenylacetic acid (30), p-hydroxyacetophenone (31), and methyl-p-hydroxphenylacetate (32). Except for compounds 2, 4, 5, 8-11, 13, 15, 18, 20, 25, and 27, the rest were isolated from the Osmanthus fragrans for the first time.


Assuntos
Medicamentos de Ervas Chinesas/química , Oleaceae/química , Medicamentos de Ervas Chinesas/isolamento & purificação , Estrutura Molecular , Plantas Medicinais/química , Espectrometria de Massas por Ionização por Electrospray
11.
Heliyon ; 10(6): e27552, 2024 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-38496897

RESUMO

Background: Lipopolysaccharide (LPS) is related to various cardiovascular diseases. However, the relationship between LPS and new-onset atrial fibrillation (NOAF) after ST-segment elevation myocardial infarction (STEMI) has yet to be elucidated. This study aimed to evaluate the impact of LPS on NOAF in STEMI patients. Methods: This was a single-center retrospective observational study including 806 patients diagnosed with STEMI. LPS levels were determined using a commercial ELISA kit. NOAF was characterized by postadmission AF with the absence of any prior history of AF. Results: A total of 806 participants were enrolled, with 752 individuals in the non-AF group (93.3%) and 54 individuals in the AF group (6.7%). Multivariable analysis showed that LPS (OR = 1.047; 95% CI: 1.029-1.065, P < 0.001) was an independent risk marker for NOAF. The analysis of the ROC demonstrated that LPS had an AUC of 0.717 in predicting NOAF. When LPS was added to the conventional model, the ability of the risk model to discriminate and reclassify NOAF was improved significantly (IDI 0.053, P = 0.001; NRI 0.510, P < 0.001). Conclusion: Elevated LPS is associated with an increased risk of NOAF in STEMI patients. The integration of LPS can improve the ability to predict NOAF in STEMI patients.

12.
Int J Biol Macromol ; 265(Pt 2): 131030, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38518949

RESUMO

Plant-based milk (PBM) alternatives are gaining popularity worldwide as the change of consumers' nutritional habits and health attitudes. Mung beans, recognized for their nutritional value, have gained attention as potential ingredients for PBM. Nevertheless, mung bean-based milk (MBM) faces instability issues common to other plant-based milks. This study investigated the factors influencing MBM stability focusing on raw materials. We selected 6 out of 20 varieties based on their MBM centrifugation sedimentation rates, representing both stable and unstable MBM. Stable MBM exhibited distinct advantages, including reduced separation rate, smaller particle size, lower viscosity, fewer protein aggregates, higher soluble protein content, and increased consumer acceptance. Major nutritional components such as protein, starch, and lipids were not significant different between stable and unstable MBM varieties. The pivotal distinction may lay in the protein properties and composition. Stable MBM varieties exhibited significantly improved protein solubility and emulsion stability, along with elevated concentrations of legume-like acidic subunits, basic 7S proteins, and 28 kDa and 26 kDa vicilin-like subunits. The increasement of these proteins likely contributed to the improvement in protein characteristics that affect MBM stability. These findings offer valuable insights for raw material selection and guidance for future mung bean breeding to enhance mung bean milk production.


Assuntos
Fabaceae , Vigna , Animais , Leite , Melhoramento Vegetal , Amido
13.
J Affect Disord ; 359: 241-252, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-38768820

RESUMO

BACKGROUND: Postpartum depression (PPD) is a serious psychiatric disorder that has significantly adverse impacts on maternal health. Metabolic abnormalities in the brain are associated with numerous neurological disorders, yet the specific metabolic signaling pathways and brain regions involved in PPD remain unelucidated. METHODS: We performed behavioral test in the virgin and postpartum mice. We used mass spectrometry imaging (MSI) and targeted metabolomics analyses to investigate the metabolic alternation in the brain of GABAAR Delta-subunit-deficient (Gabrd-/-) postpartum mice, a specific preclinical animal model of PPD. Next, we performed mechanism studies including qPCR, Western blot, immunofluorescence staining, electron microscopy and primary astrocyte culture. In the specific knockdown and rescue experiments, we injected the adeno-associated virus into the central amygdala (CeA) of female mice. RESULTS: We identified that prostaglandin D2 (PGD2) downregulation in the CeA was the most outstanding alternation in PPD, and then validated that lipocalin-type prostaglandin D synthase (L-PGDS)/PGD2 downregulation plays a causal role in depressive behaviors derived from PPD in both wild-type and Gabrd-/- mice. Furthermore, we verified that L-PGDS/PGD2 signaling dysfunction-induced astrocytes atrophy is mediated by Src phosphorylation both in vitro and in vivo. LIMITATIONS: L-PGDS/PGD2 signaling dysfunction may be only responsible for the depressive behavior rather than maternal behaviors in the PPD, and it remains to be seen whether this mechanism is applicable to all depression types. CONCLUSION: Our study identified abnormalities in the L-PGDS/PGD2 signaling in the CeA, which inhibited Src phosphorylation and induced astrocyte atrophy, ultimately resulting in the development of PPD in mice.


Assuntos
Astrócitos , Atrofia , Depressão Pós-Parto , Modelos Animais de Doenças , Prostaglandina D2 , Transdução de Sinais , Animais , Astrócitos/patologia , Astrócitos/metabolismo , Feminino , Depressão Pós-Parto/patologia , Depressão Pós-Parto/metabolismo , Camundongos , Transdução de Sinais/fisiologia , Prostaglandina D2/metabolismo , Núcleo Central da Amígdala/metabolismo , Oxirredutases Intramoleculares/genética , Oxirredutases Intramoleculares/metabolismo , Lipocalinas/genética , Lipocalinas/metabolismo , Quinases da Família src/metabolismo , Camundongos Knockout
14.
Arthritis Res Ther ; 26(1): 125, 2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-38918871

RESUMO

BACKGROUND: Juvenile idiopathic arthritis (JIA) comprises a heterogeneous group of conditions that can cause marked disability and diminished quality of life. Data on predictors of clinical response are insufficient to guide selection of the appropriate biologic agent for individual patients. This study aimed to investigate the propensity of S100A8/9 and S100A12 as predictive biomarkers of abatacept response in polyarticular-course juvenile idiopathic arthritis (pJIA). METHODS: Data from a phase 3 trial (NCT01844518) of subcutaneous abatacept in patients with active pJIA (n = 219) were used in this exploratory analysis. Association between biomarker levels at baseline and improvements in JIA-American College of Rheumatology (ACR) criteria responses or baseline disease activity (measured by Juvenile Arthritis Disease Activity Score in 27 joints using C-reactive protein [JADAS27-CRP]) were assessed. Biomarker level changes from baseline to month 4 were assessed for disease outcome prediction up to 21 months. RESULTS: At baseline, 158 patients had available biomarker samples. Lower baseline S100A8/9 levels (≤ 3295 ng/mL) were associated with greater odds of achieving JIA-ACR90 (odds ratio [OR]: 2.54 [95% confidence interval (CI): 1.25-5.18]), JIA-ACR100 (OR: 3.72 [95% CI: 1.48-9.37]), JIA-ACR inactive disease (ID; OR: 4.25 [95% CI: 2.03-8.92]), JADAS27-CRP ID (OR: 2.34 [95% CI: 1.02-5.39]) at month 4, and JIA-ACR ID (OR: 3.01 [95% CI: 1.57-5.78]) at month 16. Lower baseline S100A12 levels (≤ 176 ng/mL) were associated with greater odds of achieving JIA-ACR90 (OR: 2.52 [95% CI: 1.23-5.13]), JIA-ACR100 (OR: 3.68 [95% CI: 1.46-9.28]), JIA-ACR ID (OR: 3.66 [95% CI: 1.76-7.61]), JIA-ACR90 (OR: 2.03 [95% CI: 1.07-3.87]), JIA-ACR100 (OR: 2.14 [95% CI: 1.10-4.17]), and JIA-ACR ID (OR: 4.22 [95% CI: 2.15-8.29]) at month 16. From baseline to month 4, decreases in S100A8/9 and S100A12 generally exceeded 50% among JIA-ACR90/100/ID responders. CONCLUSION: Lower baseline levels of S100A8/9 and S100A12 proteins predicted better response to abatacept treatment than higher levels and may serve as early predictive biomarkers in pJIA. Decreases in these biomarker levels may also predict longer-term response to abatacept in pJIA.


Assuntos
Abatacepte , Antirreumáticos , Artrite Juvenil , Biomarcadores , Humanos , Abatacepte/uso terapêutico , Artrite Juvenil/tratamento farmacológico , Artrite Juvenil/sangue , Masculino , Feminino , Criança , Biomarcadores/sangue , Antirreumáticos/uso terapêutico , Calgranulina B/sangue , Adolescente , Resultado do Tratamento , Pré-Escolar , Calgranulina A/sangue , Proteína S100A12/sangue , Proteínas S100/sangue
15.
Front Immunol ; 15: 1383110, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38650930

RESUMO

Exhausted CD8 T cells (TEX) are associated with worse outcome in cancer yet better outcome in autoimmunity. Building on our past findings of increased TIGIT+KLRG1+ TEX with teplizumab therapy in type 1 diabetes (T1D), in the absence of treatment we found that the frequency of TIGIT+KLRG1+ TEX is stable within an individual but differs across individuals in both T1D and healthy control (HC) cohorts. This TIGIT+KLRG1+ CD8 TEX population shares an exhaustion-associated EOMES gene signature in HC, T1D, rheumatoid arthritis (RA), and cancer subjects, expresses multiple inhibitory receptors, and is hyporesponsive in vitro, together suggesting co-expression of TIGIT and KLRG1 may broadly define human peripheral exhausted cells. In HC and RA subjects, lower levels of EOMES transcriptional modules and frequency of TIGIT+KLRG1+ TEX were associated with RA HLA risk alleles (DR0401, 0404, 0405, 0408, 1001) even when considering disease status and cytomegalovirus (CMV) seropositivity. Moreover, the frequency of TIGIT+KLRG1+ TEX was significantly increased in RA HLA risk but not non-risk subjects treated with abatacept (CTLA4Ig). The DR4 association and selective modulation with abatacept suggests that therapeutic modulation of TEX may be more effective in DR4 subjects and TEX may be indirectly influenced by cellular interactions that are blocked by abatacept.


Assuntos
Abatacepte , Alelos , Artrite Reumatoide , Linfócitos T CD8-Positivos , Receptores Imunológicos , Humanos , Abatacepte/uso terapêutico , Abatacepte/farmacologia , Receptores Imunológicos/genética , Receptores Imunológicos/metabolismo , Artrite Reumatoide/tratamento farmacológico , Artrite Reumatoide/imunologia , Artrite Reumatoide/genética , Masculino , Feminino , Linfócitos T CD8-Positivos/imunologia , Linfócitos T CD8-Positivos/metabolismo , Linfócitos T CD8-Positivos/efeitos dos fármacos , Adulto , Lectinas Tipo C/genética , Lectinas Tipo C/metabolismo , Antígenos HLA/genética , Antígenos HLA/imunologia , Pessoa de Meia-Idade , Antirreumáticos/uso terapêutico , Predisposição Genética para Doença , Exaustão das Células T
16.
Zhongguo Zhong Yao Za Zhi ; 38(24): 4329-34, 2013 Dec.
Artigo em Zh | MEDLINE | ID: mdl-24791540

RESUMO

By Silica gel, Sephadex LH-20 and other materials for isolation and purification and by physicochemical methods and spectral analysis for structural identification, 23 compounds were isolated and identified from ethyl acetate portion of alcohol extract solution of Osmanthus fragrans fruits. Their structures were identified as nicotinamide (1), D-allitol (2), 5-hydroxymethyl-2-furancarboxaldehyde (3), acetyloleanolic acid (4), benzoic acid (5), ergosta-7,22-dien-3-one (6), beta-sitosterol (7), borreriagenin (8), cerevistero (9), c-veratroylglycol (10), methyl-2-O-beta-glucopyranosylbenzoate (11), 3', 7-dihydroxy-4'-methoxyisoflavon (12), umbelliferone (13), caffeic acid methyl ester (14), oleanolic acid (15), (-) -chicanine (16), dillapiol (17), 3beta,5alpha, 9alpha-trihydroxyergosta-7-22-dien-6-one (18), 2alpha-hydroxy-oleanolic acid (19), betulinic acid (20), betulin (21), 3, 3'-bisdemethylpinoresinol (22), and lupeol (23). All compounds were isolated from the osmanthus fruit for the first time. Except for compounds 4, 7, 15, 19, 23, the rest ones were isolated from the this plant for the first time.


Assuntos
Frutas/química , Oleaceae/química , Medicamentos de Ervas Chinesas/química
17.
Int J Biol Macromol ; 232: 123409, 2023 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-36706884

RESUMO

The current study characterized the combating memory impairment effect of seabuckthorn seed protein (SSP) and the arginine (Arg)-enriched peptides (SSPP) on d-galactose-induced brain aging in mice. The Arg content in SSP and SSPP were 10.11 and 17.82 g/100 g, respectively. Seven Arg peptides (Ile/Leu-Arg, Arg-Glu, Asp-Arg-Pro, Arg-Try-Ala, Glu-Arg-Ser, Val-Gly-Arg-Pro, and Lys-Thr-Glu-Arg) were identified from SSPP. The animal experiments of the Morris water maze and the step-down test indicated that the oral administration of SSP (0.25, 0.5, 1.0 mg/g·d) and SSPP (0.25, 0.5, 1.0 mg/g·d) significantly (p < 0.05) reversed the learning and memory impairment symptoms. The activation of endothelial nitric oxide (NO) synthase and neuronal NO synthase were increased, and inducible NO synthase decreased after SSP and SSPP in the hippocampus compared to the model group, with the SSPP being quite effective. Moreover, the treatment significantly exhibited the ability to normalize the serum inflammatory cytokine levels (NF-ĸB, TNF-α, IL-6) and suppress the Arg-inducible nitric oxide (Arg-iNO) pathway. Therefore, SSP and SSPP ingestion reversed the behavioral learning and memory impairment symptoms possibly associated with the anti-inflammation and Arg-iNO pathway. Consumption of SSP and SSPP diets can be beneficial to memory impairment.


Assuntos
Arginina , Hippophae , Animais , Camundongos , Sequência de Aminoácidos , Arginina/farmacologia , Óxido Nítrico , Fragmentos de Peptídeos , Tripsina , Proteínas , Peptídeos/farmacologia , Óxido Nítrico Sintase
18.
Front Nutr ; 10: 1161310, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37396121

RESUMO

Introduction: Glycosylation is one of the essential post-translational modifications that influences the function of milk proteins. Methods: In the present study, 998 proteins and 764 glycosylated sites from 402 glycoproteins were identified in human milk by TMT labeling proteomics. Compared to human milk proteins, the glycoproteins were mainly enriched in cell adhesion, proteolysis, and defense/immune process. Results: The abundance of 353 glycosylated sites and their 179 parent proteins was quantified. After normalization to their parent protein's abundance, 78 glycosylated sites in 56 glycoproteins and 10 glycosylated sites in 10 glycoproteins were significantly higher in colostrum and mature milk, respectively. These changed glycoproteins were mainly related to host defense. Intriguingly, one glycosylated site (Asp144) in IgA and two glycosylated sites (Asp38 and Asp1079) in tenascin are significantly upregulated even though their protein abundance was downregulated during lactation. Discussion: This study helps us figure out the critical glycosylated sites in proteins that might influence their biological function in an unbiased way.

19.
Comput Intell Neurosci ; 2022: 9978167, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35983150

RESUMO

Every country, including China, is deeply concerned and interested in the topic of agricultural machinery automation. The world's population is growing at an astronomical rate, and as a result, the need of food is also growing at an astronomical rate. Farmers are forced to apply more toxic pesticides since traditional methods are not up to the task of meeting the rising demand. This has a major impact on agricultural practices, and in the long run, the land becomes barren and unproductive. Intelligent technologies such as Internet of Things, wireless communication, and machine learning can help with crop disease and pesticide storage management, as well as water management and irrigation. In this paper, we design and analyze an intelligent system that automatically predicts the agricultural land features for irrigation purpose. Initially, the dataset is collected and preprocessed using normalization. The features are extracted using principal component analysis (PCA). For automatic prediction by the equipment, we propose heterogeneous fuzzy-based artificial neural network (HF-ANN) with genetic quantum spider monkey optimization (GQ-SMO) algorithm. Analyses and comparisons are made between the proposed approach and current methodologies. The findings indicate the effectiveness of the proposed system.


Assuntos
Agricultura , Praguicidas , Agricultura/métodos , China , Computadores , Praguicidas/análise , Tecnologia
20.
World Neurosurg ; 158: e277-e282, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34728399

RESUMO

OBJECTIVE: To retrospectively investigate the relationship between apolipoprotein E (APOE) gene polymorphism and in-stent restenosis (ISR) after stenting at the beginning of the vertebral artery. METHODS: The study included 155 patients who successfully underwent stenting at the beginning of the vertebral artery and had postoperative digital subtraction angiography or computed tomography angiography. Based on the follow-up results, they were divided into the restenosis (ISR) group and non-restenosis (non-ISR) group. The clinical information and APOE genotypes of both groups were analyzed. A binary logistic regression model was used to analyze independent risk factors for ISR. RESULTS: After 1 year of follow-up, 49 (31.6%) patients had ISR and 106 (68.4%) did not. Binary logistic regression analysis showed that serum low-density lipoprotein cholesterol (LDL-C), serum lipoprotein-related phospholipase A2 (Lp-PLA2), and E3/E4 genotype were independent risk factors for ISR after stenting at the beginning of the vertebral artery. In addition, the LDL-C level of patients with the E3/E4 genotype was higher compared with the E3/E3 genotype group (P < 0.05). CONCLUSIONS: APOE gene polymorphism is associated with ISR, and the E3/E4 genotype is an independent risk factor for ISR after stenting at the beginning of the vertebral artery. Further genetic studies can identify risk genotypes to facilitate the early prediction and identification of high-risk patients with ISR.


Assuntos
Apolipoproteínas E , Reestenose Coronária , Artéria Vertebral , Angiografia Digital , Apolipoproteínas E/genética , LDL-Colesterol , Constrição Patológica/etiologia , Reestenose Coronária/genética , Reestenose Coronária/cirurgia , Humanos , Polimorfismo Genético/genética , Estudos Retrospectivos , Fatores de Risco , Stents/efeitos adversos , Artéria Vertebral/diagnóstico por imagem , Artéria Vertebral/cirurgia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA